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   <title>asin :: Functions (Quaternion Toolbox Function Reference)
</title><link rel="stylesheet" href="qtfmstyle.css" type="text/css"></head><body><h1>Quaternion Function Reference</h1><h2>asin</h2>
<p>Inverse sine.<br>(Quaternion overloading of standard MATLAB&reg; function)
</p>
<h2>Syntax</h2><p><tt>Y = asin(X)</tt></p>
<h2>Description</h2>
<p>
<tt>asin(X)</tt> computes the inverse sine of its argument, which
must be a real quaternion (<tt>asin</tt> is not yet implemented for
complexified quaternions).
</p>
<p>
This function is computed using the Matlab&reg; function of the same name by
first computing an isomorphic complex number. The result is then assigned
the same quaternion axis as the original argument.
</p>

<h2>Examples</h2>
<pre>
&gt;&gt; asin(qi + qj + qk)
 
ans = 0 + 0.7603 * I + 0.7603 * J + 0.7603 * K
</pre>

<h2>See Also</h2>QTFM function: <a href="sin.html">sin</a><br>MATLAB&reg; function: <a href="matlab:doc asin">asin</a><br>
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